Provided by: University of Connecticut
Topic: Big Data
Date Added: Mar 2010
The authors present a systematic study of the WS-BPEL 2.0 standard based on two complementary methods: the process of constructing a new high-level WS-BPEL implementation driven by the structure of the standard, and an empirical evaluation of existing interpretations of the standard reflected in five widely available WS-BPEL-implementations, both commercial and open source. In doing so they uncover a number of new ambiguities. Most notably, WS-BPEL's integration of XPath 1.0, the data access component of WS-BPEL, turns out to be inconsistent with the XPath standard itself, which is evidenced by substantially differing results produced by existing implementations on test cases constructed to exercise their interpretation.